For some people, the RunKeeper coach's voice is enough to keep them motivated during a jog. Others need something physical to keep pace with. That's where Puma's BeatBot comes in. Developed by a NASA robotics engineer, a trio of MIT students and Puma's ad agency, the robot follows lines around a track at any pace you'd want, according to Fast Company. It can even match Usain Bolt's 2009 foot-speed world record of 44.6 KPH (27.7 MPH) in case you need something a little more aspirational than an eight-minute mile.